<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <style>
        .container {
            min-width: 600px; /* 确保中间内容可以显示出来，两倍left宽+right宽 */
        }
        .left {
            float: left;
            width: 200px;
            height: 400px;
            background: red;
            margin-left: -100%;
        }
        .center {
            float: left;
            width: 100%;
            height: 500px;
            background: yellow;
        }
        .center .inner {
            margin: 0 200px;  /* 新增部分 */
        }
        .right {
            float: left;
            width: 200px;
            height: 400px;
            background: blue;
            margin-left: -200px;
        }
    </style>
</head>
<body>
    <article class="container">
        <div class="center">
            <div class="inner">双飞翼布局</div>
        </div>
        <div class="left"></div>
        <div class="right"></div>
    </article>
</body>
</html>